chore: add vscode settings to faq (trpc#6350)

www/docs/further/faq.mdx

@@ -21,6 +21,19 @@ Feel free to contribute to this page with improvements or create a new discussio
 - Make sure you are using the TypeScript-version required by tRPC (`>=5.7.2`)
 - Make sure your editor is using the same TypeScript version as your `package.json`
 
+### VSCode settings
+
+Add these settings to your `.vscode/settings.json` in your project root to make sure your editor is using the same TypeScript version as your `package.json`:
+
+```json title=".vscode/settings.json"
+{
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "typescript.enablePromptUseWorkspaceTsdk": true
+}
+```
+
+We highly recommend committing this file to your repo so your colleagues also get the same experience.
+
 ## How do I make a middleware change the type of my `Context`?
 
 See [Context Extension](/docs/server/middlewares#context-extension).